e2ee: remove no longer needed code

modules/e2ee/E2EEContext.js

 export default class E2EEcontext {
     /**
      * Build a new E2EE context instance, which will be used in a given conference.
-     *
-     * @param {string} options.salt - Salt to be used for key deviation.
-     * FIXME: We currently use the MUC room name for this which has the same lifetime
-     * as this context. While not (pseudo)random as recommended in
-     * https://developer.mozilla.org/en-US/docs/Web/API/Pbkdf2Params
-     * this is easily available and the same for all participants.
-     * We currently do not enforce a minimum length of 16 bytes either.
      */
-    constructor(options) {
-        this._options = options;
-
+    constructor() {
         // Determine the URL for the worker script. Relative URLs are relative to
         // the entry point, not the script that launches the worker.
         let baseUrl = '';

modules/e2ee/E2EEncryption.js

         this._enabled = false;
         this._initialized = false;
 
-        this._e2eeCtx = new E2EEContext({ salt: conference.getName() });
+        this._e2eeCtx = new E2EEContext();
         this._olmAdapter = new OlmAdapter(conference);
 
         // Debounce key rotation / ratcheting to avoid a storm of messages.